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 ...
Read More
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.
Mohsen Seilsepour
Abstract
In a field experiment, the effects from application of nitrogen and boron on quantitative and qualitative characteristics of Varamin cotton variety have been studied at Tehran Agricultural and Natural Resources Research Center in 2016. The experiment has been carried out, using a randomized complete ...
Read More
In a field experiment, the effects from application of nitrogen and boron on quantitative and qualitative characteristics of Varamin cotton variety have been studied at Tehran Agricultural and Natural Resources Research Center in 2016. The experiment has been carried out, using a randomized complete block design with factorial arrangement with three replications, with the main factor being nitrogen at four levels (0, 100, 200, and 300 kg ha-1) and the sub-factor, involving boron at three levels (no leaf spray, one leaf spray, and two leaf spray). The effects of nitrogen and boron and the interaction of nitrogen and boron on the quantitative traits of cotton, namely the mean number of bolls per plant, average boll weight, fiber yield, and fiber gin out, with the qualitative traits including fiber length and strength. Highest seedcotton yield (5233 kg ha-1), fiber yield (2080 kg ha-1), fiber percentage (40%), fiber length (31.3 mm), and fiber strength (29.7 g/textile) belong to 200 kg N per hectare and twice spraying of boron. There is a correlation between the qualitative properties of the fibers and nitrogen, whose regression relation follows the quadratic equation. Results show that in soils with less than 0.5 mg/kg boron and less than 0.81% organic carbon storage, nitrogen and boron application significantly increases seedcotton and fiber yield and the fiber quality is also improved. Therefore, in such soils, it is recommended to utilize 200 kg N with two times of foliar boron application from boric acid source with a concentration of five per thousand at flowering stage for two weeks thereafter.
Ali Tadayyon; Mohammad Rafieiolhossaini
Abstract
In order to evaluate the quantitative and qualitative forage characteristics of different sainfoin ecotypes, a field experiment was conducted in a Randomized Complete Block Design (RCBD) with three replications at the Research Station of Agricultural College of Shahrekord University. In this experiment, ...
Read More
In order to evaluate the quantitative and qualitative forage characteristics of different sainfoin ecotypes, a field experiment was conducted in a Randomized Complete Block Design (RCBD) with three replications at the Research Station of Agricultural College of Shahrekord University. In this experiment, the amount of wet and dry weight of above-ground plants, plant height, and the protein and fiber contents were measured at three stages of pre-flowering, initiation of flowering and full flowering. The number of sainfoin forage cuts and variation of protein and fiber content at different forage cuts were analyzed by a split-plot on time. The results in this experiment showed that, the amount of wet, dry weight, plant height, and the protein and fiber contents were significantly affected at different ecotypes of sainfoin in all harvest stages and number of forage cutting was not significantly affected in all sainfoin ecotypes. Based on the data analysis according to split plot design in time, the factors of ecotypes and number of cutting were affected significantly. The 2nd and 4th cutting were produced maximum protein content and the 5th cutting produced maximum fiber content. The interaction between ecotype and number of cutting was not significant. Regarding to quantitative (yield) and qualitative (protein content) characteristics of forage, cultivation of Aligodarz ecotype of sainfoin showed superiority over other ecotypes.