Crop and Environment最新文献

{"title":"The role of storage reserves and their mobilization during seed germination under drought stress conditions of rapeseed cultivars with high and low oli contents","authors":"Maria Batool ,&nbsp;Ali Mahmoud El-Badri ,&nbsp;Chunyun Wang ,&nbsp;Ibrahim A.A. Mohamed ,&nbsp;Zongkai Wang ,&nbsp;Ahmad Khatab ,&nbsp;Fahad Bashir ,&nbsp;Zhenghua Xu ,&nbsp;Jing Wang ,&nbsp;Jie Kuai ,&nbsp;Bo Wang ,&nbsp;Guangsheng Zhou","doi":"10.1016/j.crope.2022.09.003","DOIUrl":"https://doi.org/10.1016/j.crope.2022.09.003","url":null,"abstract":"<div><p>Seed germination is one of the complex traits in the plant life cycle, which is accomplished by the interaction of various complex processes including seed reserve mobilization and utilization under various environmental conditions. Since seed reserves can influence seed germination, the quantitative and qualitative differences in seed reserves may relate to the germination characteristics of rapeseed seeds. Therefore, we hypothesized the positive relationship between seed germination and mobilization process of seed reserves during the seed imbibition of two rapeseed cultivars with high and low oil contents under normal and drought stress conditions. Herein, we measured the initial absorption of water and seed microstructure during seed imbibition, besides, we also determined seed germination parameters, osmolytes, enzymatic activity, lipid peroxidation, and fatty acid composition in both rapeseed cultivars. Our results displayed that the high oil content cultivar (QY1) showed a higher germination percentage with higher water absorption during the seed imbibition under drought stress conditions. Moreover, seed microstructural analysis indicated that oil bodies (OBs) were surrounding the protein storage vacuoles (PBs) compartment and cell periphery, the gap between OBs was increased to some extent, and boundaries became blurred in QY1 under drought stress conditions. Besides, the number of oil bodies was higher, while their area was lower, which might provide more energy for the germination process. Furthermore, the active metabolism of protein, sugar, and proline in QY1 was higher than ZYZ108 under normal and drought stress conditions, which might be closely related to the accretion of osmoregulatory substances that improved water uptake, thereby improving seed germination. Additionally, unsaturated fatty acids were higher in QY1 than ZYZ108, which provide greater protection against drought stress damages. Besides, QY1 exhibited high efficiency of defense system, which reduced malonaldehyde (MDA) content, hence ameliorating the oxidative damage due to drought stress. Taken together, this investigation provides new insight into the role of seed reserves as energy resources in the germination process in high oil content seeds of rapeseed cultivars, especially under drought stress conditions.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 4","pages":"Pages 231-240"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000405/pdfft?md5=53bfee71738a27fb1dafc4365eba5e59&pid=1-s2.0-S2773126X22000405-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72293781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical topping with 1,1-dimethylpiperidinium chloride increases lint yield and defoliation of cotton by improving canopy development","authors":"Feng Shi ,&nbsp;Yu Tian ,&nbsp;Xiaojuan Shi ,&nbsp;Xianzhe Hao ,&nbsp;Nannan Li ,&nbsp;Junhong Li ,&nbsp;Hongxia Zhang ,&nbsp;Ying Chen ,&nbsp;Qi Liang ,&nbsp;Huanyong Han","doi":"10.1016/j.crope.2022.11.001","DOIUrl":"10.1016/j.crope.2022.11.001","url":null,"abstract":"<div><p>Chemical topping with 1,1-dimethylpiperidinium chloride (DPC) has been considered a promising measure to inhibit apical dominance in cotton (<em>Gossypium hirsutum</em> L.). However, knowledge of the plant growth and canopy development of cotton under chemical topping with DPC remains limited, and the effect of this practice on lint yield and defoliation is unclear. A two-year (2019–2020) field experiment was conducted with two varieties, Xinluzao 60 (L60, DPC-insensitive) and Jinken1402 (JK1402, DPC-sensitive), and four topping methods, manual topping (MT), no topping (NT), DPC⁺ (fortified DPC) and DPC. We found that the lint yields of L60 and JK1402 treated with DPC were equivalent to those of L60 and JK1402 treated with DPC⁺ but were enhanced by 0.9–4.7% in L60 and 6.7–11.8% in JK1402 relative to those under MT and NT, with no significant difference in fiber quality. This was mainly due to the change in plant growth and canopy structure. In particular, compared with MT, application of DPC shortened the upper branches and extended the duration of the leaf area index peak. Moreover, in the late reproductive period, DPC application increased the number of upper leaves and reduced diffuse noninterceptance. Notably, the light transmittance rate (LLR) of JK1402 treated with DPC was higher than that of MT in the middle and lower parts of the canopy. Furthermore, there was positive correlation between LLR and defoliation rate. Therefore, chemical topping with DPC provided an effective alternative for manual topping.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 4","pages":"Pages 251-261"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X2200048X/pdfft?md5=2c577be94b34d86b6d2457721c1feae5&pid=1-s2.0-S2773126X2200048X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80829705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A deep placement of lime nitrogen reduces the nitrate leaching and promotes soybean growth and seed yield","authors":"Takuji Ohyama ,&nbsp;Keisuke Ikebe ,&nbsp;Sotaro Okuoka ,&nbsp;Tomoya Ozawa ,&nbsp;Takuya Nishiura ,&nbsp;Taiga Ishiwata ,&nbsp;Ayane Yamazaki ,&nbsp;Fumu Tanaka ,&nbsp;Toru Takahashi ,&nbsp;Takumi Umezawa ,&nbsp;Hiroyuki Ohshima ,&nbsp;Taku Kato ,&nbsp;Yoshiyuki Maeda ,&nbsp;Akihiro Saito ,&nbsp;Kyoko Higuchi ,&nbsp;Norikuni Ohtake ,&nbsp;Yoshihiko Takahashi ,&nbsp;Naoki Harada ,&nbsp;Naoko Ohkama-Ohtsu","doi":"10.1016/j.crope.2022.09.002","DOIUrl":"https://doi.org/10.1016/j.crope.2022.09.002","url":null,"abstract":"<div><p>Deep placement of coated urea, lime nitrogen (Lime N), or urea with a nitrification inhibitor, 3,4-dimethylpyrazole phosphate (DMPP-U) did not inhibit N fixation activity, and it promoted soybean growth and seed yield. However, the effect of deep placement on the N budget including N leaching has not been evaluated. In this research, soybean plants were cultivated with a basal deep placement of urea, Lime N, or DMPP-U, and the control without deep placement of N fertilizer in lysimeters filled with Andosols. The nitrate was the principal N leachate and most of them leached until the flowering stage. The total amount of leached nitrate was the highest in urea deep placement, and it was reduced by the deep placement of Lime N or DMPP-U. In 2020, the total amount of nitrate in the leachate during the cultivation was 0.95, 1.83, and 2.78 ​g ​N m⁻² in control, Lime N, and urea, respectively. The seed yield was higher in Lime N (424 ​g ​m⁻²) and urea (399 ​g ​m⁻²) than in the control (267 ​g ​m⁻²). The total amount of N accumulated in the shoots was higher in Lime N (32.1 ​g ​N m⁻²) than in the control (26.5 ​g ​N m⁻²) and urea (24.2 ​g ​N m⁻²) treatments. These results indicated that soybean plants with Lime N might assimilate more N both from N fertilizer and N₂ fixation compared with control plants. Soil incubation test confirmed that the Lime N or DMPP-U retarded nitrification than urea.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 4","pages":"Pages 221-230"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000399/pdfft?md5=4227ab924856b7d077afefa7318e63e8&pid=1-s2.0-S2773126X22000399-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72293736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vernalization and photoperiod alleles greatly affected phenological and agronomic traits in bread wheat under autumn and spring sowing conditions","authors":"Aduragbemi Amo ,&nbsp;Dauren Serikbay ,&nbsp;Luxing Song ,&nbsp;Liang Chen ,&nbsp;Yin-Gang Hu","doi":"10.1016/j.crope.2022.11.002","DOIUrl":"https://doi.org/10.1016/j.crope.2022.11.002","url":null,"abstract":"<div><p>The responses to temperature (vernalization) and day length (photoperiod) in wheat (<em>Triticum aestivum</em> L.) are mainly defined by allelic differences at the respective <em>VRN-1</em> and <em>PPD-1</em> loci, which greatly affect wheat phenology and adaptability. Using molecular markers, a panel of 61 diverse bread wheat varieties was genotyped for <em>VRN-1</em> and <em>PPD-1</em> alleles, and the traits were evaluated under two conditions by sowing in autumn and spring to investigate the impact of these genes and their alleles on phenological stages, morphological and yield traits. The results revealed that the earlier heading and flowering conferred by the dominant alleles of <em>VRN-1</em> and the insensitive alleles of <em>PPD-1</em> genes were consistent under both the autumn and spring sowing conditions. The effects of a single dominant allele of the three <em>VRN-1</em> genes were similar whereas the effects of a single insensitive allele of the three <em>PPD-1</em> genes differed, with <em>Ppd-D1a</em> stronger than <em>Ppd-B1a</em> while <em>Ppd-A1a</em> was the least. Varieties sown under spring conditions recorded a larger flag leaf area than those sown under autumn conditions regardless of the allelic influence at the <em>VRN-1</em> and <em>PPD-1</em> loci. When compared to other genes, <em>PPD-D1</em> had a consistent and significant effect on flag leaf area, spike length, and plant height across both sowing conditions. Furthermore, the varieties with <em>Ppd-D1b</em> had larger biomass across both sowing conditions, but this did not translate into increased yield because the <em>Ppd-D1a</em> recorded a higher yield. The impact of <em>PPD-D1</em> gene on grain yield was evident across both sowing conditions.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 4","pages":"Pages 241-250"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000491/pdfft?md5=e816f28a96aaf1491b76c17e12e9a314&pid=1-s2.0-S2773126X22000491-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72293780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A deep placement of lime nitrogen reduced the nitrate leaching and promote soybean growth and seed yield","authors":"T. Ohyama, Keisuke Ikebe, Sotaro Okuoka, Tomoyasu Ozawa, Takuya Nishiura, Taiga Ishiwata, Ayane Yamazaki, Fumu Tanaka, Toru Takahashi, Takumi Umezawa, Hiroyuki Ohshima, Taku Kato, Maeda Yoshiyuki, Akihiro Saito, K. Higuchi, N. Ohtake, Yoshihiko Takahashi, N. Harada, Naoko Ohkama‐Ohtsu","doi":"10.1016/j.crope.2022.09.002","DOIUrl":"https://doi.org/10.1016/j.crope.2022.09.002","url":null,"abstract":"","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73105731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of in situ incorporation of three types of green manure on soil quality, grain yield and 2-acetyl-1-pyrrolline content in tropical region","authors":"Shaokun Song ,&nbsp;Lin Li ,&nbsp;Qi Yin,&nbsp;Lixiao Nie","doi":"10.1016/j.crope.2022.08.005","DOIUrl":"10.1016/j.crope.2022.08.005","url":null,"abstract":"<div><p>Fragrant rice is widely consumed worldwide due to its pleasant aroma and better cooking qualities. Incorporation of green manure plays a good substitutable role in reducing chemical fertilizer applications while enhancing soil fertility. Field experiments were conducted to evaluate the effects of <em>in situ</em> incorporation of different green manures on soil physio-chemical properties, nitrogen (N) uptake, grain yield and the 2-acetyl-1-pyrroline (2-AP) of subsequently grown fragrant rice across two seasons. Treatments included fragrant rice grown with fallow (T0 as control), with incorporation of rice biomass in field (T1), with incorporation of Sesbania biomass in field (T2), and with incorporation of Stylosanthes biomass in field (T3). Results showed that yields of T1, T2 and T3 were increased by on average of 13.1%, 29.1% and 23.9%, respectively, across two seasons compared with T0. And 2-AP contents in rice grains under T1, T2 and T3 were increased by 44.6–56.5%, 97.2–138.1% and 75.2–174.6%, respectively. Further analysis indicated that <em>in situ</em> incorporation of leguminous green manure significantly decreased soil bulk density, while increased the soil total organic carbon, and N availability. Thus, the plant N uptake and the partial factor productivity for N fertilizer (PFP_N) were markedly increased by incorporation of leguminous green manure. Results suggested <em>in situ</em> incorporation of leguminous green manure was beneficial to sustain the production of fragrant rice in tropical regions. The mechanisms underlying the improvement of 2-AP content of fragrant rice with incorporation of the leguminous green manure will be addressed in the future.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 3","pages":"Pages 189-197"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000375/pdfft?md5=94d6578458c3651cdceb8b780b1e12c3&pid=1-s2.0-S2773126X22000375-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87098377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating crop models to assess rice yield potential in Argentina","authors":"Lorenzo Dalcin Meus ,&nbsp;Cesar Eugenio Quintero ,&nbsp;Giovana Ghisleni Ribas ,&nbsp;Michel Rocha da Silva ,&nbsp;Nereu Augusto Streck ,&nbsp;Cleber Maus Alberto ,&nbsp;María de los Ángeles Alejandra Zamero ,&nbsp;Alencar Junior Zanon","doi":"10.1016/j.crope.2022.08.002","DOIUrl":"10.1016/j.crope.2022.08.002","url":null,"abstract":"<div><p>Due to the high concentration of the rice production in Asia, the study and comprehension of rice producing chains outside this continent are key to guarantee the global food security. The objectives of this study were to validate the SimulArroz and ORYZA v3 crop simulation models for rice production in Argentina, estimate the yield potential (Yp) for different sowing dates with both models, and estimate how much Argentina can increase rice production in the current agricultural area by reducing the yield gap. Two contrasting rice models (ORYZA v3 and SimulArroz) were used. Besides both are mechanistic models, Simularroz model requires fewer coefficients than ORYZA v3,. which may increase the systematic error. The coefficient of determination between simulated and measured values was at least 0.74 for grain yield and 0.97 for phenology. RMSEn values for phenology ranged from 5.7% to 9.4%. Both models simulated grain yield accurately at high yield levels (&gt;13 ​Mg ​ha⁻¹) with an RMSE &lt;0.5 ​Mg ha^-1. The average irrigated rice Yp for subtropical Argentina estimated by the SimulArroz model ranged from 3.8 to 15.6 ​Mg ​ha⁻¹, and from 7.6 to 14.3 ​Mg ​ha⁻¹ in the ORYZA v3. The differences in the Yp between the models were due to different approaches in the calculation of thermal sum and radiation use efficiency. The increase in the rice production in Argentina if the fields close the exploitable gap (80% of the Yp) would be 42% of the current total rice production or 916,091 ​Mg annually.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 3","pages":"Pages 182-188"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X2200034X/pdfft?md5=4b8f1a6a185f3429bd5803b5969bb18d&pid=1-s2.0-S2773126X2200034X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74609559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The difference method is not necessarily reliable for comparing the nitrogen use efficiency of hybrid rice cultivars with different tolerance to low nitrogen conditions","authors":"Min Huang,&nbsp;Yu Liu,&nbsp;Jiana Chen,&nbsp;Fangbo Cao","doi":"10.1016/j.crope.2022.08.003","DOIUrl":"10.1016/j.crope.2022.08.003","url":null,"abstract":"<div><p>The difference method is one of the most commonly used methods to measure crop nitrogen (N) use efficiency. This study aimed to test the reliability of using this method to evaluate the N use efficiency of low-N tolerant hybrid rice. Two years of N fertilization experiments were conducted to compare yield attributes and N use efficiency measured by the difference method between two hybrid rice cultivars with contrasting tolerance to low N conditions, i.e. Deyou 4727 (D4727) with higher tolerance and Y-liangyou 900 (Y900) with relatively lower tolerance. Results showed that D4727 produced 17–24% higher grain yield than Y900 under zero-N fertilization conditions, confirming the higher tolerance of D4727 to low N conditions. Higher grain weight, harvest index, and internal N use efficiency were responsible for the higher grain yield in D4727 than in Y900. However, recovery efficiency of N determined by the difference method was not consistently different between D4727 and Y900, and physiological N use efficiency (PE_N) and agronomic N use efficiency (AE_N) determined by the difference method were 31–68% lower in D4727 compared to Y900. The lower PE_N and AE_N in D4727 than in Y900 were mainly due to a higher grain yield in D4727 than in Y900 under unfertilized conditions. This study suggests that the difference method is not necessarily reliable for comparing the N use efficiency of rice cultivars with different tolerance to low-N conditions, and both crop performance under unfertilized conditions and N responses under fertilized conditions should be considered when using this method to evaluate the N use efficiency of rice.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 3","pages":"Pages 168-172"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000351/pdfft?md5=226946a39d821f0b75ddbb4641bf1245&pid=1-s2.0-S2773126X22000351-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77968024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genotypic variation of yield-related traits in an irrigated rice breeding program for tropical Asia","authors":"Syed Tahir Ata-Ul-Karim ,&nbsp;Hasina Begum ,&nbsp;Vitaliano Lopena ,&nbsp;Teresita Borromeo ,&nbsp;Perminder Virk ,&nbsp;Jose E. Hernandez ,&nbsp;Glenn B. Gregorio ,&nbsp;Bertrand C.Y. Collard ,&nbsp;Yoichiro Kato","doi":"10.1016/j.crope.2022.08.004","DOIUrl":"10.1016/j.crope.2022.08.004","url":null,"abstract":"<div><p>Developing high-yielding rice varieties is critical to ensure global food security. To date, selection of promising genotypes is based on empirical evaluation for grain yield, but the relationship of agronomic traits to yield in tropical rice breeding is largely unknown. This study aimed to determine the extent of variation for 19 agronomic traits and interrelationships among traits in an irrigated rice breeding program at the International Rice Research Institute, Philippines. A large set of elite germplasm comprising advanced genotypes and varieties derived from the breeding pipeline was evaluated during dry and wet seasons. The broad-sense heritability ranged from 0.35 to 0.99 for all traits in both seasons. Grain yield for the whole plot (plot yield) was positively correlated with yield per plant, 1000 grain weight, and grain width in dry season, and yield per plant, 1000 grain weight, grain width, number of panicles per plant, and panicle exertion rate in wet season. Path analysis showed that the highest direct positive effect of traits on plot yield ranged from 0.25 to 0.45 in dry season and from 0.22 to 0.88 in wet season. Heat map bi-cluster analysis assigned genotypes into three main clusters in both seasons, while traits were grouped into three and five clusters in dry and wet seasons, respectively. The cluster analysis showed that spikelets per panicle, filled grains per plant, and yield per plant were key yield contributing traits. Identification of traits that were highly correlated with rice yield could be useful for developing new varieties adapted to tropical environments.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 3","pages":"Pages 173-181"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000363/pdfft?md5=ab6a76732e945b1325ced4da9841c6d7&pid=1-s2.0-S2773126X22000363-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84952419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cotton yield response to fertilizer phosphorus under a range of nitrogen management tactics","authors":"Gunasekhar Nachimuthu ,&nbsp;Graeme Schwenke ,&nbsp;Jon Baird ,&nbsp;Annabelle McPherson ,&nbsp;Clarence Mercer ,&nbsp;Brad Sargent ,&nbsp;Andy Hundt ,&nbsp;Ben Macdonald","doi":"10.1016/j.crope.2022.09.004","DOIUrl":"10.1016/j.crope.2022.09.004","url":null,"abstract":"<div><p>Long term crop nutrient removal is leading to decline in available phosphorus (P) in Vertisols. To improve the efficiency of P fertilizer applied for cotton production it is important to understand its interaction with other applied nutrients, particularly nitrogen (N). Four experiments were conducted to investigate the cotton lint yield response to applied P fertilizer (dispersed throughout the beds) under (i) three different N rates, (ii) various split-N application timing treatments, (iii) additional late N application and (iv) two water-run urea application strategies. Cotton lint yield response to applied P fertilizer was influenced by split-N application ratio and timing, but not N rates or water run N strategies. Additional late N application reduced lint yield and P response. Applying all the N fertilizer pre-plant along with P increased cotton lint yield by 37.2% (with 32.5% greater seed yield), compared with applying P before planting and all N fertilizer in-crop. Phosphorus application improved lint turnout by increasing cotton lint and reducing trash. These results indicate improved agronomic efficiency of applied P fertilizer dispersed throughout the beds can be possible by supplying crops with optimum N earlier in the season. The P dispersion throughout the plant beds potentially improved the P acquisition by cotton roots—where more N was applied pre-plant than in-crop. Future research needs to focus on greater understanding of the N-priming effect on cotton root growth and its impact on response to applied P.</p></div>","PeriodicalId":100340,"journal":{"name":"Crop and Environment","volume":"1 3","pages":"Pages 214-219"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773126X22000417/pdfft?md5=432da5a2a4fc7e160fb4f6aa239ce6a8&pid=1-s2.0-S2773126X22000417-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86427106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}