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Birsa Agricultural University, Ranchi

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Author: Sheoprasonna Kumar × End date: 1997 × Start date: 1993 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Studies on Effect of Foliar Spray of Potassium, Calcium, Zinc And Gibberellin Acid On The Reproduction Growth Fruit-Set, Yield And Quality Of Guava (psidium Guajava L.) Cv Allahabad Safeda
    (Birsa Agricultural University, Ranchi, 1997) Sheoprasonna Kumar; C.Singh
    Guava (Psidium guajava L.), the apple of tropics, belongs to family myrtaceae, is one of the most common fruit in India. It claims to be the fourth position in area and production after mango, banana and citrus and Bihar ranks next to Uttar Pradesh. Being a native of tropical America, it is widely grown in most parts of our country. It has attained a respectable place and popularity amongst the dietary list of common people in the country. Availability of the fruits for a longer part of the year at moderate price provides a chance of fresh fruits for consumption. As it is evident that the soil of Chotanagpur is acidic and gravely in nature i.e. course textured sandy. soil, hence it has maximum leaching capacity. If nutrients are added into the soil, the absorption is delayed and scanty. In such circumstances, growth as well as production will be insufficient. In recent years variety of chemicals in solution form are directly applied as foliar spray since they are readily absorbed and utilized more efficiently. This method is more convenient, gives quicker response and permits accurate timings of the resultant effects. Moreover, soil application is enormous uneconomical, hence it can be replaced by spray application of smaller doses. In spite of all above facts the cultivators of Chotanagpur and Santhal Parganas have no authentic informations regarding the impact of various nutrients and growth regulators in cultivation of guava for maximum return at minimum cost. Thus, in view of the above, an endeavour was made to study the effect of K, Ca, Zn and GA3, on the reproductive growth, fruit-set, yield and quality of guava. The present investigation was carried out at the Horticulture Garden of the Department of Horticulture, Birsa Agricultural University, Kanke, Ranchi. The experiment was laidout in Randomised Block Design with twelve treatments and it was replicated thrice. Single plant was treated as a single plot. The result of foliar spray on guava indicated that CAN+ GA, 150 ppm and CAN + GA, 200 ppm were the best treatments to get maximum yield and best quality of fruits such as physical as well as chemical alongwith organoleptic scores of fruits in comparison to control. The next treatments which showed better performance in enhancing the yield as well as quality of fruits, were CAN + GA3, 100 ppm and CAN + ZnSo4. 1.5 percent. On the basis of results obtained it may be concluded that GA3, 150 ppm become the best treatment to get maximum yield and best quality of fruits just followed by GA, 200 ppm. GA, 100 ppm and ZnSo, 1.5 percent showed very satisfactory results in respect of yield and quality of fruits and these are at par to each other. Hence on the basis of results obtained the spray of GA, 100-150 ppm and ZnSo4. 1.5 per cent may be recommended to the growers for better production of guava with best quality of fruits.
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    ThesisItemOpen Access
    Studies on The Effect of Foliar Spray of Potassium, Calcium , Zinc And Gibberellic Acid on The Reproductive Growth ,Fruit -Set, Yield And Quality of Guava Cv. Allahabad Safeda
    (Birsa Agricultural University, Ranchi, 1997) Sheoprasonna Kumar; C. Singh
    Guava (Psidium guajava L), the apple of tropics, belongs to family myrtaceae, is one of the most common fruit in India. It claims to be the fourth position in area and production after mango, banana and citrus and Bihar ranks next to Uttar Pradesh Being a native of tropical America, it is widely grown in most parts of our country. It has attained a respectable place and popularity amongst the dietary list of common people in the country. Availability of the fruits for a longer part of the year at moderate price provides a chance of fresh fruits for consumption. As it is evident that the soil of Chotanagpur is acidic and gravely in nature i.e, course textured sandy soil, hence it has maximum leaching capacity. If nutrients are added into the soil, the absorption is delayed and scanty. In such circumstances, growth well as production will be as insufficient. In recent years variety of chemicals in solution form are directly applied as foliar spray since they are readily absorbed and utilized more efficiently. This method is more convenient, gives quicker response and permits accurate timings of the resultant effects. Moreover, soil application is enormous uneconomical, hence it can be replaced by spray application of smaller doses. In spite of all above facts the cultivators of Chotanagpur and Santhal Parganas have no authentic informations regarding the impact of various nutrients and growth regulators in cultivation of guava for maximum return at minimum cost. Thus, in view of the above, an endeavour was made to study the effect of K, Ca, Zn and GA, on the reproductive growth, fruit-set, yield and quality of guava. The present investigation was carried out at the Horticulture Garden of the Department of Horticulture, Birsa Agricultural University, Kanke, Ranchi. The experiment was laidout in Randomised Block Design with twelve treatments and it was replicated thrice. Single plant was treated as a single plot. The result of foliar spray on guava indicated that CAN + GA, 150 ppm and CAN + GA, 200 ppm were the best treatments to get maximum yield and best quality of fruits such as physical as well as chemical alongwith organoleptic scores of fruits in comparison to control. The next treatments which showed better performance in enhancing the yield as well as quality of fruits were CAN + GA, 100 ppm and CAN + ZnSo, 1.5 percent. On the basis of results obtained it may be concluded that GA, 150 ppm become the best treatment to get maximum yield and best quality of fruits just followed by GA, 200 ppm. GA, 100 ppm and ZnSo4. 1.5 percent showed very satisfactory result in respect of yield and quality of fruits and these are at par to each other. Hence on the basis of results obtained the spray of GA, 100-150 ppm and ZnSo4. 1.5 per cent may be recommended to the growers for better production of guava with best quality of fruits.