EFFECT OF MINIMUM SEEDBED PREPARATION ON COTTON YIELD
Hanan Ali Ezzat El- Ganayni;
Abstract
Three types of tillage machines [disc harrow (dh), chisel plough (cp) and sub soiler (ss)] were used in five seedbed preparation treatments: A-[(dh], B-[(cp) one-pass + (db)], C-[(cp) two-pass +(db)], D-[(cp) one-pass + (ss) + (db)], and E-[(cp) two-pass + (ss) +(db)]. These treatments were applied to cotton planting for two seasons, 1992 and
1993 ; all followed by ridging. The effect of the treatments was studied
for eight characters of tillage machines and ten plant and yield characters of cotton:
I. Field performance characters
1. Effective field capacity: (cp) the lowest, (dh) the highest capacity.
2. Field efficiency%: (cp) lowered efficiency by 67%, (ss) by 94%.
3. Slip ratio(%): (dh) gave the best (4.54%), wlule (ss) gave 13.06%.
. Rate of fuel consumption (L/hour) : treatment A- the lowest and E- the highest.
5. Drawbar pull (kN) : (cp) 2-pass - the highest , (dh) - the lowest.
6.Drawbarpull power (kW): (db)- the lowest, (cp) 2-pass- the highest.
7. Cost of seedbed preparation (LE/fed): (db) the lowest, (ss) the highest.
8. Total cost (LE/hour): treatment A- the lowest cost, E- the highest. II. Plant and Yield characters
1. Number of days to first flower: no significant differences.
2. First pick % : no significant differences.
3.Plant height: treatment D- tallest, E- shortest.
4. No. of fruiting branches/plant: treatment D- higher than all.
5. Position of ! fruiting branch: no sigtuficant differences.
6. No. of bolls/plant: treatment C-largest number, E- smallest.
7. Boll mass: treatment B- the heaviest, E- the lightest ; 1993 season gave heavier bolls than 1992.
8.Lint%: In 1992, treatment A- hlghest and B-lowest.
9. Seed index : no significant differences.
10.Seed cotton yield: treatment D- and C- highest, E-lowest. There were positive and hlghly significant 'r' values between seed cotton yield with plant height, no. of fruiting branches/plant and number of open bolls/plant indicating that these three characters are the main contributors to yield.
1993 ; all followed by ridging. The effect of the treatments was studied
for eight characters of tillage machines and ten plant and yield characters of cotton:
I. Field performance characters
1. Effective field capacity: (cp) the lowest, (dh) the highest capacity.
2. Field efficiency%: (cp) lowered efficiency by 67%, (ss) by 94%.
3. Slip ratio(%): (dh) gave the best (4.54%), wlule (ss) gave 13.06%.
. Rate of fuel consumption (L/hour) : treatment A- the lowest and E- the highest.
5. Drawbar pull (kN) : (cp) 2-pass - the highest , (dh) - the lowest.
6.Drawbarpull power (kW): (db)- the lowest, (cp) 2-pass- the highest.
7. Cost of seedbed preparation (LE/fed): (db) the lowest, (ss) the highest.
8. Total cost (LE/hour): treatment A- the lowest cost, E- the highest. II. Plant and Yield characters
1. Number of days to first flower: no significant differences.
2. First pick % : no significant differences.
3.Plant height: treatment D- tallest, E- shortest.
4. No. of fruiting branches/plant: treatment D- higher than all.
5. Position of ! fruiting branch: no sigtuficant differences.
6. No. of bolls/plant: treatment C-largest number, E- smallest.
7. Boll mass: treatment B- the heaviest, E- the lightest ; 1993 season gave heavier bolls than 1992.
8.Lint%: In 1992, treatment A- hlghest and B-lowest.
9. Seed index : no significant differences.
10.Seed cotton yield: treatment D- and C- highest, E-lowest. There were positive and hlghly significant 'r' values between seed cotton yield with plant height, no. of fruiting branches/plant and number of open bolls/plant indicating that these three characters are the main contributors to yield.
Other data
| Title | EFFECT OF MINIMUM SEEDBED PREPARATION ON COTTON YIELD | Other Titles | تأثير اقل معدل اعداد لمقرد البذرة علي انتاجية محصول القطن | Authors | Hanan Ali Ezzat El- Ganayni | Issue Date | 1998 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| Hanan Ali Ezzat El- Ganayni.pdf | 420.83 kB | Adobe PDF | View/Open |
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