INFLUENCE OF DIFFERENT RATES OF METOLACHLOR AND WEEDING REGIME ON CROP VIGOUR AND YIELD COMPONENTS OF SWEET POTATO (Ipomoea batatas L.) AT AFAKA, KADUNA, NIGERIA.

FUDMA Journal of Agriculture and Agricultural Technology Pub Date : 2023-04-07 DOI:10.33003/jaat.2023.0901.07

J. Essien, T. Adeogun, U. Bala, M. Olorukooba, R. Mohammed

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Abstract

The field experiment was conducted at the Research farm of the of Forestry Mechanization, Afaka, Kaduna, to determine the influence of different rates of metolachlor and weeding regime on crop vigour and yield components of sweet potato (Ipomoea batatas). The experiment was carried out during 2019/2020 and 2020/2021 raining seasons. The trial consisted of four weeding regimes at 3, 6, 9 and 12 weeks after planting (WAP), two rates of metolachlor (3.0 kg a.i./ha-1 and 2.0 kg a.i/ha-1), hoe weeded control at 4 and 8 weeks after planting (WAP), weed free treated plots and weedy check plots. Making a total of eleven treatments, laid out in a randomized complete block design (RCBD) replicated three times. The gross and net plot sizes were 6.75 m2 (3 m x 2.25 m) and 2.25 m2 (3 m x 0.75 m) respectively. The result showed that in 2019/2020 the weed free treated plots and the plots with the application of metolachlor at 3.0 kg a.i/ha-1 plus weeding regime at 3 WAP resulted in comparable higher crop vigour, higher number of tubers per plot, and higher tuber weight per plot than all the other treatments. While the weedy check plots recorded the least vigorous crops and the least significant tuber weight per plot than all the other treatments. At 2020/2021 the plots with the application of metolachlor at 2.0 kg a.i./ha-1 plus weeding regime at 12 WAP and the weed free treated plots recorded the highest vigorous crops. The highest number of tubers per plot and the highest weight of tubers per plot at harvest was recorded by the weed free treated plots (9.10a) followed by the plots with the application of metolachlor at 3.0 kg a.i./ha-1 plus weeding regime at 3 WAP (7.60b). The study therefore recommended the use of the weed free treated plots and the plots with the application of metolachlor at 3.0 kg a.i./ha-1 plus weeding regime at 3 WAP in the study area for better yield of sweet potato

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不同异丙甲草胺施用量和除草制度对甘薯作物活力和产量成分的影响在尼日利亚卡杜纳的阿法卡。

在卡杜纳阿法卡林业机械化研究农场进行了田间试验，以确定不同施甲草胺量和除草制度对甘薯作物活力和产量成分的影响。试验在2019/2020和2020/2021两季进行。试验包括种植后3、6、9和12周(WAP) 4种除草方案，2种异丙甲草胺施用量(3.0 kg a.i./ha-1和2.0 kg a.i./ha-1)，种植后4和8周(WAP)锄草控制，无杂草处理地块和杂草检查地块。总共11个治疗，在随机完全区设计(RCBD)中进行，重复三次。总用地面积为6.75平方米(3米× 2.25米)，净用地面积为2.25平方米(3米× 0.75米)。结果表明，2019/2020年，无杂草处理和施用3.0 kg a.i/ha-1异丙甲草胺加3wap除草处理的作物活力、亩产块茎数和亩产块茎重均高于其他处理。与其他处理相比，杂草对照小区的作物活力最低，块茎重量也最不显著。2020/2021年，施用异丙甲草胺2.0 kg a.i./ha-1 + 12 WAP除草的地块和无杂草处理地块的作物活力最高。收获时每块块茎数量和每块块茎重量最高的是无杂草处理地块(9.10a)，其次是施用3.0 kg a.i./ha-1和3 WAP除草的地块(7.60b)。因此，本研究建议在研究区使用无杂草处理地块和施用3.0 kg a.i./ha-1的异丙甲草胺加3wap除草的地块，以获得更好的甘薯产量

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FUDMA Journal of Agriculture and Agricultural Technology

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