Abstract The objective of this research was to investigate the effect of different rates of
organic fertilizers with or without mungbean crop residues incorporated into the soil after
harvesting, on growth and yield of transplanted rice as well as economic return of
mungbean as pre-rice crop. An experiment was conducted in a farmer’s field in Muang Yai
Village, Khon Kaen Province, Thailand, in 2011. A split-plot arrangement of treatments in
a RCBD (randomized completed block design) was used, with pre-rice mungbean or fallow
with weeds incorporated into the soil in main plots, and cattle manure at four rates (0;
3,125; 6,250; 9,375 kg/ha) as subplots. Incorporation of mungbean residue into the soil
provided 3.2 t of dry matter per ha containing 50.2 kg N, 9.8 kg P and 166.2 kg K per ha.
Incorporation of weeds in the fallow treatment provided 1.7 t of dry matter per ha
containing 11.3 kg N, 2.8 kg P and 90 kg K per ha. Mungbean residues incorporated into
the soil significantly increased plant height and tiller number per hill but had no significant
effect on top dry weight per hill of the succeeding rice crop at panicle initiation stage (PI).
At harvest, pre-rice mungbean significantly increased top dry weight per hill of rice.
Application of different rates of cattle manure significantly affected plant height at PI and
harvest. Cattle manure applied at the highest rate (9,375 kg/ha) had the highest plant height.
Grain yield of rice was not significantly affected by pre-rice management. However,
incorporation of mungbean residues produced an increase in rice grain yield over fallow
treatment of 416 kg/ha (or 17%). Incorporation of mungbean significantly increased
panicle number per hill. Incorporation of mungbean residue and application of cattle
manure at 6,250 kg/ha produced the maximum panicle number per hill. Cattle manure
application at the rate of 9,375 kg/ha resulted in the maximum rice grain yield (2,920
kg/ha). No significant interaction between pre-rice residue management and cattle manure
application was found on rice grain yield. Growing mungbean before rice provides the
advantage of marketable grain of mungbean to 1.6 t/ha. The net economic return was found
highest in growing mungbean alone with transplanted rice later (2,855US $/ha) or three
times higher than the fallow treatment.
บทคัดย่อวัตถุประสงค์ของงานวิจัยนี้มีการ ตรวจสอบผลของราคาที่แตกต่างกันของปุ๋ยอินทรีย์มี หรือไม่ มีตกค้างพืชถั่วเขียวรวมเข้าไปในดินหลังจาก การเก็บเกี่ยว การเจริญเติบโตและผลผลิตของข้าว transplanted และผลตอบแทนทางเศรษฐกิจของ ถั่วเขียวเป็นพืชข้าวก่อน การทดลองที่ดำเนินการในฟิลด์ของชาวนาในเมืองใหญ่ หมู่บ้าน จังหวัดขอนแก่น ประเทศไทย ในปี 2554 จัดแบ่งแผนการรักษาใน RCBD (randomized บล็อกเสร็จสมบูรณ์ออกใช้ ถั่วเขียวข้าวก่อนหรือฟอลโลว์ มีวัชพืชรวมเข้าไปในดินในผืนหลัก และมูลวัวราคาสี่ (0 3,125 6250 ยูโร 9,375 kg/ฮา) เป็น subplots จดทะเบียนของถั่วสารตกค้างในดิน 3.2 ให้ทีเรื่องแห้งต่อฮา ประกอบด้วย 50.2 กก. N, P 9.8 กก. และ กก. 166.2 K ต่อฮา จดทะเบียนของวัชพืชในการบำบัดรักษา fallow ให้ 1.7 t ของแห้งเรื่องต่อฮาประกอบด้วย 11.3 กิโลกรัม N, P 2.8 กก. และ กก. 90 K ต่อฮา ถั่วเขียวตกรวมอยู่ใน ดินเพิ่มขึ้นจำนวนสูงและการเพาะปลูกของพืชต่อเขา แต่ก็ไม่สำคัญมาก ผลต่อน้ำหนักแห้งสูงสุดต่อเขาเพาะข้าวประสบความสำเร็จในขั้นเริ่มต้น panicle (PI) ที่เก็บเกี่ยว ถั่วเขียวข้าวก่อนเพิ่มน้ำหนักแห้งสูงสุดต่อเขาข้าวอย่างมาก ใช้มูลวัวอัตราแตกต่างกันอย่างมีนัยสำคัญได้รับผลกระทบสูงพืชที่ PI และ เก็บเกี่ยว มูลวัวใช้ในอัตราสูงสุด (9,375 kg/ฮา) ที่มีความสูงของพืชสูงสุด Grain yield of rice was not significantly affected by pre-rice management. However, incorporation of mungbean residues produced an increase in rice grain yield over fallow treatment of 416 kg/ha (or 17%). Incorporation of mungbean significantly increased panicle number per hill. Incorporation of mungbean residue and application of cattle manure at 6,250 kg/ha produced the maximum panicle number per hill. Cattle manure application at the rate of 9,375 kg/ha resulted in the maximum rice grain yield (2,920 kg/ha). No significant interaction between pre-rice residue management and cattle manure application was found on rice grain yield. Growing mungbean before rice provides the advantage of marketable grain of mungbean to 1.6 t/ha. The net economic return was found highest in growing mungbean alone with transplanted rice later (2,855US $/ha) or three times higher than the fallow treatment.
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Abstract The objective of this research was to investigate the effect of different rates of
organic fertilizers with or without mungbean crop residues incorporated into the soil after
harvesting, on growth and yield of transplanted rice as well as economic return of
mungbean as pre-rice crop. An experiment was conducted in a farmer’s field in Muang Yai
Village, Khon Kaen Province, Thailand, in 2011. A split-plot arrangement of treatments in
a RCBD (randomized completed block design) was used, with pre-rice mungbean or fallow
with weeds incorporated into the soil in main plots, and cattle manure at four rates (0;
3,125; 6,250; 9,375 kg/ha) as subplots. Incorporation of mungbean residue into the soil
provided 3.2 t of dry matter per ha containing 50.2 kg N, 9.8 kg P and 166.2 kg K per ha.
Incorporation of weeds in the fallow treatment provided 1.7 t of dry matter per ha
containing 11.3 kg N, 2.8 kg P and 90 kg K per ha. Mungbean residues incorporated into
the soil significantly increased plant height and tiller number per hill but had no significant
effect on top dry weight per hill of the succeeding rice crop at panicle initiation stage (PI).
At harvest, pre-rice mungbean significantly increased top dry weight per hill of rice.
Application of different rates of cattle manure significantly affected plant height at PI and
harvest. Cattle manure applied at the highest rate (9,375 kg/ha) had the highest plant height.
Grain yield of rice was not significantly affected by pre-rice management. However,
incorporation of mungbean residues produced an increase in rice grain yield over fallow
treatment of 416 kg/ha (or 17%). Incorporation of mungbean significantly increased
panicle number per hill. Incorporation of mungbean residue and application of cattle
manure at 6,250 kg/ha produced the maximum panicle number per hill. Cattle manure
application at the rate of 9,375 kg/ha resulted in the maximum rice grain yield (2,920
kg/ha). No significant interaction between pre-rice residue management and cattle manure
application was found on rice grain yield. Growing mungbean before rice provides the
advantage of marketable grain of mungbean to 1.6 t/ha. The net economic return was found
highest in growing mungbean alone with transplanted rice later (2,855US $/ha) or three
times higher than the fallow treatment.
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