RESPONSE OF ZEA MAYS L. PRODUCTION TO PLANTING DATE AND FOLIAR FEEDING WITH HUMIC ACID
Keywords:
Planting dates, foliar nutrition, humic acid, Zea maysAbstract
The factoriality experiment was carried out according to a randomized complete block design (R C B D) with three replications in Diyala Governorate / AlMuqdadiyah District / Abu Saida District / Abu Sebaa Village, which is 60 km northeast of the city of Baqubah, the center of the governorate, during the spring season of 2023 in soil with a sandy clay mixture texture. to know the response of yellow corn plant production. Zea mays L, synthetic variety 5018, for planting dates 1-4-15-3, and 4-15/2023, and foliar feeding for two levels of humic acid 2- and 3-ml L-1 and comparing them . The results showed that planting date15-4 and 1-4 were superior in terms of plant height (cm) and the number of rows per stalk, with an average of 210.91 and 193.16 cm and 15.58 and 14.63 rows of stalk-1 compared to date 15-3, which recorded the lowest average of 175.83 cm and 12.74 rows/ horns-1 , and the date 15-3 was superior in the number of grains per row, with an average of 33.25 grains/ row-1 , compared to date 15-4, which recorded the lowest average, amounting to 27.77 grains/ row-1 . Date 1-4 excelled in the weight of 300 grains (g), with an average of 110.38 grams, compared to date 15-4, which recorded the lowest average of 96.44 grams
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