Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: nitrogen fertigation

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Harvest index of potato crop grown under different nitrogen and water supply

100%

Mazurczyk W., Wierzbicka A., Trawczynski C.

Acta Scientiarum Polonorum. Agricultura

2009

tom 08

nr 4

On the basis of the field experiment carried out at the Experimental Station at Jadwisin (52°29’ N; 21°03’ E), Polish mid-early potato cultivar Triada was grown on sandy loam in years 2004 and 2005 in 6 treatments, which included the application of water and nitrogen: organic (cattle manure) and mineral. Water drip irrigation and nitrogen fertigation were scheduled by the Decision Support System (DSS). Diverse water supplies and organic or mineral nitrogen did not change harvest index (HI) values, which varied between 0.7 and 0.8 at the end of the growing period. Average tuber dry matter yield, about 11.0 t∙ha⁻¹, in both years of the investigation was reached with different HI values: 0.78 for 2004, and 0.73 for 2005. Higher percentage of biomass distributed to tubers was found in 2004, which was characterized by lower cumulative thermal time and global radiation, as well as better water balance in comparison with the growing period of 2005.

Comparison of watermelon yields under conditions of drip irrigation connected with nitrogen fertigation in vicinities of Bydgoszcz (Poland) and Cukurova (Turkey)

80%

Rolbiecki R., Rolbiecki S., Senyigit U.

Infrastruktura i Ekologia Terenów Wiejskich

2011

nr 12

The paper is based on the chosen results of two one-year field experiments which were conducted in the vicinity of Bydgoszcz (Poland) and in the vicinity of Cukurova (Turkey). The aim of the study is to present the comparison of yields of chosen watermelon cultivars grown in the different climatic-soil conditions under drip irrigation with N fertigation. The experiment in Turkey was carried out under better soil conditions than in Poland - watermelon plants were cultivated on the clay loam and fine sand, respectively. ‘Crimson Sweet' and ‘Sugar Baby' cultivars were tested in the experiment in Poland, and two other cultivars (‘Madera-F1', ‘Paladin-F1') were examined in the experiment in Turkey. Nitrogen of 120 kg N was applied in two different nitrogen forms (G - granule nitrogen; L - liquid nitrogen). In the second treatment (L), the liquid N fertilizer was given with irrigation water (fertigation). All plots were drip irrigated. Higher irrigation water rate was supplied in Turkey (251.7 mm) than that in Poland (157.5 mm). Average yields of watermelon ranged from 32.62 to 37.87 t.ha-1, and from 29.09 to 30.35 t.ha-1, in the experiment in Poland and in the experiment in Turkey, respec-tively. Yields were dependent on cultivar and treatment (experimental variant). The yields of ‘Crimson Sweet' and ‘Madera-F1' cultivars in treatment with combined N application (granule and liquid N) were higher than these of treatment with granule N source. Fruit weight ranged in both the trials from 3.0 to 5.5 kg. ‘Sugar Baby' and ‘Madera-F1' cultivars were characterized by the highest fruit weight (5.5 kg and 5.2 kg, respectively) under combined N application. From results, it can be concluded that watermelon yield could be increased by application of liquid N fertilizer. Amongst the four cultivars, ‘Crimson Sweet' and ‘Madera-F1' gave higher yields under conditions of applications of granule together with liquid nitrogen form.

Niektore zwiazki fenolowe jeczmienia browarnego

70%

Klepacka J., Fornal L., Borejszo Z., Wrobel E.

Żywność Nauka Technologia Jakość

2000

tom 07

nr 4

64-71

Analizowano zawartość związków fenolowych ogółem, wolnych, w połączeniach estrowych i kompleksowych w ziarnie jęczmienia browarnego odmiany Maresi, uprawianego przy zróżnicowanym poziomie nawożenia azotowego. Stwierdzono wyraźnie większą zawartość związków fenolowych ogółem w otrębach, w porównaniu z mąką oraz ich wzrost wraz ze zwiększaniem nawożenia azotowego. Wykazano, że kwas ferulowy nie występuje w połączeniach estrowych, natomiast jego ilość w połączeniach kompleksowych zwiększa się wraz ze stosowaniem nawożenia azotowego. Gęstość optyczna (barwa) ziarniaków jęczmienia zmieniała się wraz ze wzrostem nawożenia azotowego i zawartości kwasu ferulowego w połączeniach kompleksowych.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Agricultura

1 Infrastruktura i Ekologia Terenów Wiejskich

1 Żywność Nauka Technologia Jakość

1 Borejszo Z.

1 Fornal L.

1 Klepacka J.

1 Mazurczyk W.

1 Rolbiecki R.

1 Rolbiecki S.

1 Senyigit U.

1 Trawczynski C.

1 Wierzbicka A.

1 Wrobel E.

1 2011

1 2009

1 2000

Wyniki wyszukiwania

Harvest index of potato crop grown under different nitrogen and water supply

Comparison of watermelon yields under conditions of drip irrigation connected with nitrogen fertigation in vicinities of Bydgoszcz (Poland) and Cukurova (Turkey)

Niektore zwiazki fenolowe jeczmienia browarnego