Økologisk planteavl uden husdyrgødning

Økologisk planteavl i Sverige. God økonomi i økologisk planteavl uden husdyrgødning. Udlæg af lucerne i vintersæd. Kvælstof- og svovlgødskning

Aktuel økologi i Sverige

På en tur rundt i Östragötland midt i september 2018, fik vi et godt indtryk af, hvad der rører sig indenfor den økologiske sektor i Sverige. Turen bød på alt fra mælkeproduktion, ægproduktion og kødkvæg til planteavl med dyrkning af hamp og quinoa

Rates of induced abortion in Denmark according to age, previous births and previous abortions

Background: Whereas the effects of various socio-demographic determinants on a woman’s risk of having an abortion are relatively well-documented, less attention has been given to the effect of previous abortions and births. Objective: To study the effect of previous abortions and births on Danish women’s risk of an abortion, in addition to a number of demographic and personal characteristics. Data and methods: From the Fertility of Women and Couples Dataset we obtained data on the number of live births and induced abortions by year (1981-2001), age (16-39), county of residence and marital status. Logistic regression analysis was used to estimate the influence of the explanatory variables on the probability of having an abortion in a relevant year. Main findings and conclusion: A woman’s risk of having an abortion increases with the number of previous births and previous abortions. Some interactions were was found in the way a woman’s risk of abortion varies with calendar year, age and parity. The risk of an abortion for women with no children decreases while the risk of an abortion for women with children increases over time. Furthermore, the risk of an abortion decreases with age, but relatively more so for women with children compared to childless women. Trends for teenagers are discussed in a separate section.abortion parity, abortion rates, family situation, fertility parity, urbanization

Spiser kvæg som en grønthøster, eller er de kræsne

De fire arter, som studene selekterede positivt, var alle naturarter, nemlig alm. kvik, manna-sødgræs, alm. hønsetarm og fløjlsgræs. Af de arter, som studene selekterede negativt, var der to kulturarter, rød svingel og engrapgræs, samt to naturarter, mosebunke og knæbøjet rævehale. Studenes selektion var ikke knyttet til kvalitet for foderværdi i form af fordøjeligt organisk stof, råprotein eller cellevægsindhold (NDF)

Agertidsler har fanden skabt - eller har han?

Bekæmpelse af agertidsle

Hestebønnes tidlige rodudvikling ved dyrkning i kamme

Forsøg udført på sandjord har vist at hestebønnes tidlige rodudvikling påvirkes af om hestebønne dyrkes på kamme eller flad jord. Kamme fremmer væksten af pæleroden men ikke nødvendigvis siderødderne. Planterne opnår derfor en større roddybde men ingen større total rodlængde