Hadi Shooride; Heidar Meftahizade; Mohaddese Heydarzade; Abdollah Yousefi
Abstract
In order to investigate the yield and yield components of Guar (Cyamopsis tetragonoloba L.) genotypes to supplementary irrigation in rainfed conditions, a two-year study has been conducted in the form of split strip plots based on a randomized complete block design with three replications at stations ...
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In order to investigate the yield and yield components of Guar (Cyamopsis tetragonoloba L.) genotypes to supplementary irrigation in rainfed conditions, a two-year study has been conducted in the form of split strip plots based on a randomized complete block design with three replications at stations Shirvan, Kohnehkand and Mohammadabad research stations in North Khorasan during 2019-2020 cropping years. The main factor includes irrigation levels at three levels: rainfed, two irrigations (after planting and filling seed time), and three irrigations (after planting, pod formation and filling seed), with the second factor being guar genotypes at four levels. The three Genotypes include RGC-1077, RGC-1036, RGC-1025, and Chabahar local population. Results of the combined analysis show that there has been no significant difference between genotype except in the number of days to flowering. On the other hand, the effect of supplementary irrigation treatment on yield characteristics compared to rainfed conditions is significant, though there has not been any significant difference between two and three times of supplementary irrigation. Guar seed yield in the first and second years in the Ashkhaneh region (750.5 and 219.1 kg.ha-1) outperforms Bojnourd and Shirvan. The highest grain yield (590 kg.ha-1) is obtained in the first year from double irrigation and in the second year (271.51 kg.ha-1) from three irrigations. Among the experimental genotypes, the highest grain yield belongs to the RGC-1025 genotype. In general, guar culture of the RGC-1025 genotype can be recommended in the Ashkhaneh area..
Mohaddese Heydarzade; Seyed MohammadReza Ehteshami; Mohammad Rabiee
Abstract
Despite the progress of the livestock industry in Iran, the production of forage plants commensurate with this development has not been considered. Therefore, this study has been conducted during 2017, with the need to produce feed for livestock and poultry and with the aim of determining the best density ...
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Despite the progress of the livestock industry in Iran, the production of forage plants commensurate with this development has not been considered. Therefore, this study has been conducted during 2017, with the need to produce feed for livestock and poultry and with the aim of determining the best density and planting date on quantitative and qualitative characteristics of Guar forage. Taking place in the Rasht Rice research Institute-station located in the Village of GilPordehsar in the Sangar city, it evaluates four planting date (May 12, May 26, June 9, and June 23) and three plant densities (200, 400 and 600 plant.ha-1) factorially in a randomized complete block design with three replications. Results show that the planting date of May 26 and the density of 600 plant.ha-1 in terms of fresh forage yield (35.02 t/ha), crude protein (19.02%), dry matter (54.35%), and carbohydrate (26.12%) are superior to other planting dates and plant density under test. The highest yield of dry forage (6.1 t/ha) and neutral detergent fiber (58.23%) has been observed on May 12 and a density of 600 plant.ha-1. The amount of crude fiber has increased with delay in planting, but the percentage of Ash is not affected by different planting dates and densities. According to the results, in order to obtain the highest quantity and quality of forage in Guilan Province, the planting date of May 26 and the density of 600 plant.ha-1 is recommended.