Hungrig nach Wissenschaft

AMSTERDAM – Im Mekong-Delta erwirtschaften Bauern in der Trockenzeit sechs bis sieben Tonnen Reis pro Hektar und in der Regenzeit vier bis fünf Tonnen, indem sie schnell reifende Reissorten verwenden, die bis zu drei aufeinander folgende Ernten im Jahr ermöglichen. Westafrikanische Reisbauern dagegen ernten nur etwa 1,5 Tonnen pro Hektar traditionellen Hochlandreises im Jahr, und andere Getreidesorten erbringen nicht mehr als eine Tonne – eine Menge, die vergleichbar mit der im mittelalterlichen Europa ist.

Solche Disparitäten müssen nicht sein. Tatsächlich hat die Verbreitung landwirtschaftlicher Technologien – von effizienteren Maschinen bis hin zu robusteren oder ertragreicheren Pflanzensorten – das Potenzial, die Produktivitätslücke entscheidend zu verkleinern, und dies sogar dann, wenn die Unterschiede bezüglich Klima und Produzenten gleich bleiben.

Beispielsweise sorgt eine neue Art von afrikanischem Hochlandreis, Nerica, für eine Verdreifachung der jährlichen Erträge. Ebenso haben verbesserte Aufzuchtmethoden, qualitativ hochwertigeres Futter und bessere tierärztliche Versorgung dazu geführt, das die weltweite Milchproduktion sich mehr als verdoppelt hat. Trotzdem bleiben die regionalen Unterschiede hoch: Kühe in der Niederlanden können jährlich etwa 9.000 Liter Milch erzeugen, während Zebus in den Tropen nur etwa 300 Liter schaffen.

To continue reading, please log in or enter your email address.

Registration is quick and easy and requires only your email address. If you already have an account with us, please log in. Or subscribe now for unlimited access.

required

Log in

http://prosyn.org/a99EbA2/de;
  1. Patrick Kovarik/Getty Images

    The Summit of Climate Hopes

    Presidents, prime ministers, and policymakers gather in Paris today for the One Planet Summit. But with no senior US representative attending, is the 2015 Paris climate agreement still viable?

  2. Trump greets his supporters The Washington Post/Getty Images

    Populist Plutocracy and the Future of America

    • In the first year of his presidency, Donald Trump has consistently sold out the blue-collar, socially conservative whites who brought him to power, while pursuing policies to enrich his fellow plutocrats. 

    • Sooner or later, Trump's core supporters will wake up to this fact, so it is worth asking how far he might go to keep them on his side.
  3. Agents are bidding on at the auction of Leonardo da Vinci's 'Salvator Mundi' Eduardo Munoz Alvarez/Getty Images

    The Man Who Didn’t Save the World

    A Saudi prince has been revealed to be the buyer of Leonardo da Vinci's "Salvator Mundi," for which he spent $450.3 million. Had he given the money to the poor, as the subject of the painting instructed another rich man, he could have restored eyesight to nine million people, or enabled 13 million families to grow 50% more food.

  4.  An inside view of the 'AknRobotics' Anadolu Agency/Getty Images

    Two Myths About Automation

    While many people believe that technological progress and job destruction are accelerating dramatically, there is no evidence of either trend. In reality, total factor productivity, the best summary measure of the pace of technical change, has been stagnating since 2005 in the US and across the advanced-country world.

  5. A student shows a combo pictures of three dictators, Austrian born Hitler, Castro and Stalin with Viktor Orban Attila Kisbenedek/Getty Images

    The Hungarian Government’s Failed Campaign of Lies

    The Hungarian government has released the results of its "national consultation" on what it calls the "Soros Plan" to flood the country with Muslim migrants and refugees. But no such plan exists, only a taxpayer-funded propaganda campaign to help a corrupt administration deflect attention from its failure to fulfill Hungarians’ aspirations.

  6. Project Syndicate

    DEBATE: Should the Eurozone Impose Fiscal Union?

    French President Emmanuel Macron wants European leaders to appoint a eurozone finance minister as a way to ensure the single currency's long-term viability. But would it work, and, more fundamentally, is it necessary?

  7. The Year Ahead 2018

    The world’s leading thinkers and policymakers examine what’s come apart in the past year, and anticipate what will define the year ahead.

    Order now