Naslov
Impact of different pipe drainage spacing at drained soil on drainage water quality and crop yields

Autori
Šimunić, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Ecology and biology of the soil / K.Š. Kazeev - Rostov : Southern Federal University, 2014, 226-230

ISBN
978-5-9275-1355-0

Skup
International scientific conference "Ecology and biology of the soil"

Mjesto i datum
Rostov; Ruska Federacija, 17.11.2014. - 19.11.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Pipe drainage spacing; drainage water; crop yields

Sažetak
The goal of three-year investigation was to determine the impact of different pipe drainage spacing at drained soil on crop yields and drainage water quality. Investigations were carried out at the experimental amelioration field in the period from 1 October 2008 to 30 September 2011. Pseudogley-gley soil was drained with four different pipe drainage spacing from 15 m, 20 m, 25 m and 30 m in four repetition. Winter wheat (2008/09), oil seed rape (2009/10) and soybean (2011) were grown at the experimental site. Identical agricultural management practices were applied in each year in all pipe spacing variants. Total nitrogen rates applied amounted to 183.6 kg/ha (2008/09), 175.5 kg/ha (2009/10) and 130 kg/ha (2011). Research results show that drainage discharge and its duration depended on the amount and distribution of precipitation during the study period. The highest drainage discharge was determined at the narrowest pipe spacing (15 m), while its longest duration was observed at the widest spacing (30 m). No drainage discharge was registered in the growing season of the dry 2011. The highest nitrate concentration in drainage water, in all pipe spacing variants, was recorded with the occurance of the first drainage discharge and was higher than MAC (10 mg/L NO3-N). It was only after the autumn crop harvest that nitrate concentration was below MAC. The amount of nitrates leached, in each year and at each pipe spacing, depended on the drainage discharge and nitrate concentration in drainage water. Crop yields in the production year were statistically significant between the set pipe spacings (2008/09 and 2009/10), while they were not statistically significant in 2011. Effect of pipe drainage in draining surplus water from soil was in humid years while no effect of pipe drainage was recorded in the dry year.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA