Research Achievments

RESEARCH ACHIEVEMENTS
Genetic Resource Management and Crop Improvement
 new-arrow Fifty two accessions of litchi and allied species were collected from indigenous sources and were planted in the germplasm repository.
 new-arrow Eight cultivars of litchi were also collected from Spain under FAO Project
 new-arrow The molecular characterization of 20 litchi cultivars is in progress in collaboration with CISH, Lucknow using RAPD and ISSR markers
 new-arrow Fifty six superior clones of litchi were identified and propagated for their detailed evaluation.
 new-arrow The hybrid progeny involving litchi cvs. Shahi, China, Bedana and Kasba were developed and are under evaluation.
 new-arrow About 400 seedlings of cv. Shahi and China are under evaluation. Further, seedlings are also being raised from the selected clones.
Crop Production
 new-arrow Plantation of various experimental blocks with most common cvs. Shahi and China has been completed in 15 ha area to conduct different trials. A mother block of 1.5 ha, germplasm block of 3 ha, seedling block of 2 ha has also been planted for conducting different studies at the Centre.
 new-arrow Rejuvenation technique for old senile orchard has been standardized
 new-arrow Application of 75:50:100 g NPK/plant/year in cv. Shahi and 100:50:100 g NPK/plant/year in cv. China has been found most effective for vegetative growth of plants.
 new-arrow Inter-space utilization protocol for young non-bearing litchi orchards has been developed with (1) Litchi-Banana (2) Litchi–Cowpea-Potato-Onion (3) Litchi-Okra-Gladiolus models with high B:C ratio of 2.38, 1.53 and 1.37, respectively.
 new-arrow Foliar application of planofix @ 2.5 ml/10 L or NAA 20 mg/ L of water one week after fruit set, significantly checked the fruit drop.
 new-arrow Two spray of KNO3 (4% and 2%) after 20 and 30 days of fruit set delayed colour-break by 5 days in litchi cv. Shahi.
 new-arrow Bagging of individual litchi bunches in cv.Shahi with perforated butter paper was found the best for production more class-I category fruits with reduced sun-burn and cracked fruits.
 new-arrow Covering plants with 30% green and 50% white shade net extended the harvesting period up to 16 days with slight decrease in TSS and acidity.
 new-arrow Biodiversity of arbuscular mycorrhiza in litchi rhizosphere was studied. Three species of Glomus was the found predominantly associated.
Crop Protection
 new-arrow Major pests of litchi prevalent in the area were identified. Borer complex of litchi are most important as they extensively damage the developing and matured fruits reducing the yields and marketability.
 new-arrow Trichogramma @50,000 eggs/ha at flower initiation and Nimbicidine @0.5% at fruiting, Cypermethrin @0.005% and Nimbicidine @0.5% were effective in minimizing the damage caused by fruit borer.
 new-arrow Three new threats of pests in litchi were identified viz., red weevil (Apoderus blandus), semilooper (Anisodes illepidaria) and bagworm (Eumeta crameri).