PREDICTION OF GRAIN SORGHUM YIELD UNDER SOME DIFFERENT AGRICULTURAL PRACTICES
AHMED EL-RIWAI ABDEL AZEEM AHMED MOURAD;
Abstract
Six experiments were carried out at three locations in Giza, Fayoum, and Sohag
Governorate in 19&9 and 1990 seasons. Each experiment included twelve treatments which were the combinations of two sorghum varieties (Giza 15, NES 1007), two
densties (22.2 plant m•', 11.1 plant 1112
and three nitrogen levels which were 60 kg fed-'.
(142.9 kg ha-1 , 80 kg fed-' (190.5 kg ha-') and 100 kg fed-'. (238.1 kg ha- 1
to study the
) )
availability of usi11g CERES-Sorghum modelu11der Egyptian co11ditions by calibratio11 and validation it with experime11tal data.
Climatic data (Daily maximum a11d minimum air temperature and total solar radiatio11
Mj n12 ), soil data (Soil physical a11alysis , organic matter and amount of nitrogen ) and
genetic cofficient for Giza 15 and NES 1007 (P1, P20,. P2R, P5 and G) were determined to run the CERES-Sorghum model and comparison between observed and predicted data.
The results indicated that:-
1. The model generally gives reasonable prediction of LAI anc1 economic grain yield per hectar under the three locations
2. Extra inputs not incloud in this study could be used such as water consumptive use, soil nitrogen movement and nitrogen absorption...etc.
3. Building up Arabic simulation models to express the accumulated agricultural local knowledge in a simple way for the benefit of the farmer.
4. Carrying out different studies for idintifing the phenoloical Stages. Key words
Sorghum ; Prediction; Simulation ; Models; Validation .
Governorate in 19&9 and 1990 seasons. Each experiment included twelve treatments which were the combinations of two sorghum varieties (Giza 15, NES 1007), two
densties (22.2 plant m•', 11.1 plant 1112
and three nitrogen levels which were 60 kg fed-'.
(142.9 kg ha-1 , 80 kg fed-' (190.5 kg ha-') and 100 kg fed-'. (238.1 kg ha- 1
to study the
) )
availability of usi11g CERES-Sorghum modelu11der Egyptian co11ditions by calibratio11 and validation it with experime11tal data.
Climatic data (Daily maximum a11d minimum air temperature and total solar radiatio11
Mj n12 ), soil data (Soil physical a11alysis , organic matter and amount of nitrogen ) and
genetic cofficient for Giza 15 and NES 1007 (P1, P20,. P2R, P5 and G) were determined to run the CERES-Sorghum model and comparison between observed and predicted data.
The results indicated that:-
1. The model generally gives reasonable prediction of LAI anc1 economic grain yield per hectar under the three locations
2. Extra inputs not incloud in this study could be used such as water consumptive use, soil nitrogen movement and nitrogen absorption...etc.
3. Building up Arabic simulation models to express the accumulated agricultural local knowledge in a simple way for the benefit of the farmer.
4. Carrying out different studies for idintifing the phenoloical Stages. Key words
Sorghum ; Prediction; Simulation ; Models; Validation .
Other data
| Title | PREDICTION OF GRAIN SORGHUM YIELD UNDER SOME DIFFERENT AGRICULTURAL PRACTICES | Other Titles | التنبؤ بكمية محصول الذرة الرفيعة تحت بعض المعاملات الزراعية المختلفة | Authors | AHMED EL-RIWAI ABDEL AZEEM AHMED MOURAD | Issue Date | 1995 |
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