الفهرس 
INTRODUCTION
Studies on morning-gloryOnly 14 pages are availabe for public view
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Abstract
”Identification of different morning-glory (Ipomoea spp.) weed species and their control methods on sugarcane field (Saccharum spp.) in Sohag Governorate”.
The present investigation in part I aimed to studies on morning-glory (Ipomoea spp.) as follows:
Part I:
1. Identification of morning-glory (Ipomoea spp.):
The seeds of morning–glory weeds were collected from El-Minia, Sohag and Aswan Governorates, thus it sowing in pots and we studied the differences among morphology species and identified to four types are
1. Ipomoea eriocarpa. 2. Ipomoea hederaceae.
3. Ipomoea Purpurea. 4. Ipomoea cairica.
2. Effect of morning-glory species and sowing dates on morning-glory seed germination.
Sowing date significantly effected on germination of morning-glory in both seasons, respectively. Data reveled that Ipomoea cairica and Ipomoea Purpurea were faster in germination compared to Ipomoea eriocarpa in the first and second season, respectively.
3. Effect of morning-glory species and sowing depth on morning-glory seed germination.
Results cleared that sowing depth of morning-glory at 2-6 cm were quickly in germination other depths, and found that Ipomoea cairica was faster than anther species in germination in both seasons.
Meanwhile, the main objectives of its part II:
The investigation was conducted at Shandaweel Agriculture Research Station in Sohag Governorate, ARC. To determined the best weed control treatment morning-glory control methods.
A completely randomized block design with four replicates was used in both seasons. The effect of nine weed control treatments as follows:-
1. Diuron 90% DF pre-emergence (pre- em.) at the rate of 2 kg/fed.
2. Metribuzin 70% WP (pre- em.) at the rate of 300 g/fed.
3. Triclopyr 48% EC at 30 days after planting at rate of 400 cm3/fed
4. Glyphosate 48% WSC (pre-planting at 20 days.) at the rate 1L/fed.
5. Diuron 90% DF (pre- em.) at the rate of 2 Kg/fed. Followed by Triclopyr 48% EC (post- em at 45 days.) at the rate of 400 cm3/fed.
6. Metribuzin 70% WP (pre- em.) at the rate of 300 g/fed. Followed by Triclopyr 48% EC (post- em at 45 days.) at the rate of 400 cm3/fed..
7. Glyphosate 48% WSC (pre-planting at 20 days.) at rate 2 L/fed. Followed by Triclopyr 48% EC (post- em at 45 days.) at the rate of 400 cm3/fed.
8. Hand hoeing after 30 and 60 day from planting.
9. Untreated (check).
Sugarcane was planted on 23 and 15th of March in both seasons. The dry method of sugarcane planting was used, each plots contained 5 furrows 1 m apart and long 4.2 m. The plot area was 21 m2 (1/200 fed.), sugarcane variety was G.84-47.
Part II:
Effect of weed control treatments on:
1. Morning-glory survey:
1. Dry weight of morning-glory at 75 days after planting:
Results showed that the effect of weed control treatments was significantly decreased on the dry weight of morning-glory at 75 day after planting in both seasons. Using of hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr to reduction the dry weight of morning-glory in both seasons.
2. Dry weight of morning-glory at 105 (DAP):
Results showed that the effect of weed control torments were significantly decreased the dry weight of morning-glory at 105 day after planting in both seasons. Using of hand hoeing twice after 30 and 60 day from planting, duiron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr as compared with un-weeded treatment in both seasons.
2. Yield and yield components for sugarcane:
1. Stalk height (cm.):
Data clarified that weed control treatments was significantly affected on stalk height (cm.) of sugarcane in both seasons. Hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr gave the tallest plant by n both seasons, as compared with un-weeded treatment gave the lowest values of stalk height in both seasons.
2. Stalk diameter (cm.):
Results indicated that weed control treatments had a significant effect on stalk diameter (cm) in both seasons. Application of hand hoeing twice after 30 and 60 day from planting, duiron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr produced plants with the increased value of stalk diameter (cm.) in both seasons.
3. Number of internodes/stalk:
Data revealed that weed control treatments significantly affected on number of internodes/stalk at harvest sugarcane in both seasons. Hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr gave the highest value of number of internodes/stalk and increased in both seasons as compared with un-weeded treatment.
4. Length of internodes (cm.):
Results obtained that weed control treatments caused a significant increase in the values of length of internodes/plant. Application of hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr produced the highest length of internodes in both seasons as compared with un-weeded treatment.
5. Stalk weight (kg.):
The results obtained that hand hoing twice caused a relative increase in the values of stalk weight/plant (kg.) in the both seasons. Applied hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr gave the highest values stalk weight in both seasons.
6. Number of millable sugarcane (thousand/fed.):
Results indicated that weed control treatments had a significant effect on number of millable cane (thousand/fad.) in both seasons. Hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr gave the highest increase in number of millable cane/fed. in both seasons
7. Net sugarcane yield (ton/fed.):
Results indicated that weed control treatments had a significant effect on sugarcane yield ton/fed. in both seasons. Hand hoeing twice after 30 and 60 day from planting, and diuron followed by triclopyr gave the highest increase in cane yield/fed. in both seasons.
8. Sugar yield ton/fed.
Results exhibited that a significant effect on sugar yield ton/fed. due to the used weed control treatments in both seasons. Using hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr resulted higher than the un-weeded plots in both seasons.
4. Quality characters:
1. Brix percentage.
Data indicated that weed control treatments significantly affected on brix percentage in both seasons. Data also revealed that the application of hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr increased brix percentages in both seasons as compared with un-weeded treatment.
2. Sucrose percentage.
Results indicated that weed control treatments significantly affected on sucrose percentage in both seasons. Data also reveal that the application of hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr increased sucrose percentages in both seasons.
3. Purity percentage.
Data in showed that weed control treatments significantly affected on purity percentage in both seasons. The data also reveal that the application of hand hoeing twice after 30 and 60 day from planting, diuron followed by triclopyr, glyphosate followed by triclopyr and metribuzin followed by triclopyr increased purity percentages in both seasons.
4. Sweet percentage.
The studied weed control treatments were significantly affected on sweet percentage in both seasons.
5. Sugar recovery percentage:
Data revealed the weed control treatments effect on sugar recovery percentage at harvest.
The results showed that weed control treatments relative and significant in the values of sugar recovery percentage in the both seasons.
CONCLUSION
from this investigation, we identified four species of morning-glory weed, which spread in sugarcane plantation in Upper Egypt. These species were: Ipomoea eriocarpa, Ipomoea hederaceae, Ipomoea Purpurea and Ipomoea cairica.
These species need to high temperature for germination, it germination on near depths from surface soil (2-6 cm.). This weed need to more weed control management to over come.
Under the condition of Sohag using package from weed control methods gave best management for these weeds, such as hand hoeing twice after 30 and 60 (DAP) or integration between herbicides, such as Diuron 90% DF (pre- em.) at the rate of 2 kg/fed. followed by triclopyr 48% EC (post- em at 45 days.) at the rate of 400 cm3/fed to get the highest yield of stalk and sugar yield/fed.).