European Journal of Agricultural and Rural Education

A COMPARATIVE STUDY OF THE PRODUCTIVE PERFORMANCE BETWEEN HOLSTEIN FRIESIAN AND SIMMENTAL COWS IN THE FIRST PRODUCTION SEASON, WHICH RAISED AT TAJ ALNAHRAIN STATION IN AL-QADISIYAH GOVERNORATE

Muayad Abdulwahid Jaber Al-Fayad — 2025-04-15

This research was conducted in the Iraqi province of Al-Qadisiyah, in the Al-Diwaniyah District and in the Taj Al-Nahrain Dairy Cow Breeding Station between August 1, 2023 and June 1, 2024 in order to assess the productive capabilities of Holstein Friesians and Simmental in the first season of milk production. In this research, 26 dairy cows were employed at the start of their lactation and during their first season of production, 15 Holstein Friesian cows and 11 Simmental cows were employed. The results demonstrated a significant influence (P

<0.05) of the breed on both daily and total milk production, Holstein Friesian cows were significantly more productive than Simmental cows (P><0.05) in both daily and total milk production, their averages were (1.12±0.15, 506.45±0.67650) kg, (1.8±0.10, 90±3474) kg, respectively. Simmental cows were significantly more superior (P><0.05) than Holstein cows in the percentage of total solids in milk and the percentage of fat in milk, while Holstein cows were significantly more superior (P><0.05) than Simmental cows in the percentage of water in milk, the average of these values was (0.09±12.5, 0.03±4.11, 0.09±87.43) (0.01±11.44, 0.09±3.17, and 0.01±88.55) respectively. No significant differences (P><0.05) existed between the two species in the percentage of protein, lactose, ash, percentage of solids not containing fat and milk density. The results demonstrated a significant advantage for Holstein cows (P><0.05) in terms of fat and protein in milk over the course of the trial, compared to Simmental cows, the averages were (16.887±215, 16.507±206.986) kg (13.555±142.865, 10.221±108.83) kg, respectively. Also, Simmental cows had a significantly higher (P><0.05) caloric value than Holstein cows (1 kg of milk), the averages were (0.038±285.322) kilocalories, (0.050±284.322) kilocalories, and (0.006) kilocalories, respectively>

PROTECTION OF CONIFEROUS PLANTS FROM THE MAIN SUCKING PESTS IN THE REPUBLIC OF UZBEKISTAN

Zafar Nurmahmadovich Nafasov — 2025-04-10

Applications of Attila super and, Bagira preparations consider to control the pests of conifer plants in the conditions of Uzbekistan. Optimal consumption rates products recommend to against aphids on pine trees and mealybugs on junipers

THE EFFECT OF SOWING TIME AND RATES ON SOYBEAN YIELD

Akbar Mukhtorovich Abduazimov — 2025-04-12

The article presents yield indicators for two soybean varieties (Uzbek-6 and Nafis) at different sowing dates and sowing rates. Yields were compared by year (2022, 2023, 2024) and average values were calculated. Yield changes were recorded based on the results of a 3-year study conducted in the experimental field. According to the results, the most effective sowing date (01.05) was the late sowing date, with a yield of 39.93 c/ha from the Uzbek-6 variety at a rate of 375 thousand/ha. The average sowing date (15.04) was the highest yield at 375 thousand/ha, with a yield of 39.83 c/ha from the Uzbek-6 variety. The highest yield was 375 thousand/ha from the Uzbek-6 variety at an early sowing date, with a yield of 34.53 c/ha from the Uzbek-6 variety

GROWING PERIOD OF LENTIL VARIETIES AND RANGES IN RAINFOREST FIELDS

Jabarov Farrukh Odirovich — 2025-04-18

This article presents information about the duration of the growing season of 30 varieties and ridges of lentils (Lens culinaris) studied in a controlled variety trial nursery under the conditions of rainy fields, compared with the model variety.