FARGHLY, B., ZOHRY, A. (2002). EFFECT OF PRECEDING CROPS IN THREE-YEAR CROP ROTATIONS AND N RATES ON YIELD AND YIELD COMPONENTS OF EGYPTIAN COTTON. Egyptian Journal of Agricultural Research, 80(1), 293-307. doi: 10.21608/ejar.2002.304224
BADR S. FARGHLY; ABDEL-HAFEZ A. ZOHRY. "EFFECT OF PRECEDING CROPS IN THREE-YEAR CROP ROTATIONS AND N RATES ON YIELD AND YIELD COMPONENTS OF EGYPTIAN COTTON". Egyptian Journal of Agricultural Research, 80, 1, 2002, 293-307. doi: 10.21608/ejar.2002.304224
FARGHLY, B., ZOHRY, A. (2002). 'EFFECT OF PRECEDING CROPS IN THREE-YEAR CROP ROTATIONS AND N RATES ON YIELD AND YIELD COMPONENTS OF EGYPTIAN COTTON', Egyptian Journal of Agricultural Research, 80(1), pp. 293-307. doi: 10.21608/ejar.2002.304224
FARGHLY, B., ZOHRY, A. EFFECT OF PRECEDING CROPS IN THREE-YEAR CROP ROTATIONS AND N RATES ON YIELD AND YIELD COMPONENTS OF EGYPTIAN COTTON. Egyptian Journal of Agricultural Research, 2002; 80(1): 293-307. doi: 10.21608/ejar.2002.304224
EFFECT OF PRECEDING CROPS IN THREE-YEAR CROP ROTATIONS AND N RATES ON YIELD AND YIELD COMPONENTS OF EGYPTIAN COTTON
Crop Intensification Research Section, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
Four types of cotton rotations have been started since 1995/ 1996 season at Shandaweel Agric. Res. St. (Upper Egypt) to evaluate the effect on cotton production of different crop sequences and N rates on yield and yield components of cotton. Four preceding crop sequences viz., wheat/maize (P1), wheat/soybean (P2), faba bean/maize (P3) and faba bean/soybean (P4) were studied as main plots. Three nitrogen levels, i.e. 45,60 and 75 Kg N/fed. were applied to the cotton crop in the sub-plots. Results in 1999 and 2000 seasons Indicated that preceding crops significantly affected plant height, number of fruiting branches/ plant, total open bolls/plant, average bolls weight and weight of seeds/ boll. In both seasons seed cotton yield was 11.4 and 15.7% higher when cotton followed soybean than cotton grown after the cereal crops. All studied cotton characters were increased by increasing N levels up to 75 Kg N/fed. Seed cotton yield from 75Kg N/fed. Was higher than at 60 and 45 Kg N/fed. by 8.5, 15.9%, 6.73 and 16.88% in first and second seasons, respectively. The highest performance of cotton was observed when cotton was grown after legume crops and fertilized with 75 Kg N/fed., while the lowest performance was obtained following cereal crops and the lowest N level in both seasons.
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